单词	alternate interior angles
释义	Alternate Interior Angles When two lines are crossed by another line (the Transversal), a pair of angles • on the inner side of each of those two lines • but on opposite sides of the transversal are called Alternate Interior Angles. c and f are Alternate Interior Angles. d and e are Alternate Interior Angles. So there are actually two pairs! Play with it below (try dragging the points):
随便看	upper bound us standard units value variable variance vector velocity venn diagram vertex vertex (parabola) vertical vertical angles vertical flip vertical shift vertically opposite angles vertices vigesimal vinculum visual estimation volume vulgar fraction wage wave wavelength wealth

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